The CISSP book (ISBN 978-1-119-04271-6) in the introduction (page xli, the bulleted paragraph) states that the flashcards can be downloaded to a mobile device for convenience of studying. On the flashcard webpage, I can find no place to download the cards. I can only seem to use them online. This ther actually a way to download the flashcards or is it a error in the book and they are only available while online?